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Texas Instruments LP3907QTLX-VXSS/NOPB
- Part No.:
- LP3907QTLX-VXSS/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 25-WFBGA
- Datasheet:
-
LP3907QTLX-VXSS/NOPB.pdf
- Description:
- IC REG QUAD BUCK/LNR SYNC 25USMD
- Quantity:
- Payment:
- Shipping:
Inventory:4,419
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Product details
Overview
LP3907QTLX-VXSS/NOPB from Texas Instruments is a programmable power management IC integrating two synchronous buck converters (1 A and 600 mA), two 300-mA LDOs, and a 400-kHz I²C interface - all in a 24-pin WQFN package. It delivers precision voltage regulation for FPGA/DSP core and I/O rails, supports dynamic voltage scaling, and features programmable power-on sequencing with external nPOR control.
For engineers reviewing the LP3907QTLX-VXSS/NOPB datasheet, LP3907QTLX-VXSS/NOPB pinout, LP3907QTLX-VXSS/NOPB application, or LP3907QTLX-VXSS/NOPB equivalent, this device is selected for low-power embedded systems requiring multi-rail programmability, thermal robustness (RθJA = 32.7°C/W), and I²C-configurable sequencing across battery- or DC-powered applications.
Technical Context
The LP3907QTLX-VXSS/NOPB implements dual independent buck regulators with PWM-to-PFM automatic mode switching at light loads, enabling >96% peak efficiency and ultra-low quiescent current (33 µA in PFM). Its LDOs use PMOS pass devices with 30 mV typical dropout and ±3% output accuracy over −40°C to +125°C.
Control architecture centers on a 400-kHz I²C interface supporting register-level configuration of VOUT, enable timing, power-on reset delay, UVLO thresholds, and buck operating modes (Forced PWM or Auto). The nPOR open-drain output provides synchronized power-good signaling for both bucks with 50-ms default delay and 94%/85% rising/falling voltage thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 5.5 V - supports single-cell Li-ion, USB, or regulated DC inputs without external pre-regulation |
| Buck1 Output | 0.8 V–2.0 V @ 1 A - programmable for FPGA core voltages with ±3% accuracy and 2.1-MHz switching |
| Buck2 Output | 1.0 V–3.5 V @ 600 mA - configurable for I/O or peripheral rails with PWM-to-PFM transition for light-load efficiency |
| LDO1/LDO2 Output | 1.0 V–3.5 V @ 300 mA each - low-noise (80 µVrms) linear regulation with 30-mV typical dropout |
| I²C Interface | 400-kHz standard-mode - enables host-controlled sequencing, DVS, and real-time status monitoring |
| Thermal Protection | 160°C shutdown with 20°C hysteresis - ensures safe operation under sustained overload or poor PCB thermal design |
| Package | 24-pin WQFN (4.0 mm × 4.0 mm) - exposes thermal pad (DAP) for enhanced heat dissipation (RθJB = 11.2°C/W) |
Pinout & Package
LP3907QTLX-VXSS/NOPB uses a 24-pin WQFN (RTW) package with 0.5-mm pitch and exposed thermal pad (DAP) for improved thermal performance. The DAP must be soldered to PCB ground plane for optimal junction-to-board thermal resistance (11.2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINLDO12 | Analog power supply | Provides dedicated 2.8–5.5 V input for internal reference, bias, I²C, and logic - decoupled from power-switching paths |
| nPOR | Open-drain power-good output | Signals valid regulation of Buck1/Buck2 outputs; pulled low if either falls outside 94%/85% target window; includes 100-kΩ internal pullup |
| SW1 / SW2 | Switch node outputs | Connect to external inductors; require low-ESR ceramic capacitors (10 µF) and 2.2-µH inductors for stable operation |
| FB1 / FB2 | Feedback inputs | Resistive divider inputs setting VOUT; support programmable range via I²C register writes |
| ENLDO1 / ENLDO2 | Digital enable inputs | Active-high logic control for LDO1/LDO2; allow independent power gating and sequencing |
| SCL / SDA | I²C bus interface | Standard 400-kHz bidirectional communication; require external pullups per I²C spec (1.2–10 kΩ) |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Scaling (DVS) | Enables real-time VOUT adjustment of Buck1/Buck2 via I²C during system operation - reduces power in low-performance states |
| Programmable Power-On Sequencing | Configurable enable timing and delay for all regulators using EN_T and I²C registers - eliminates need for external sequencers |
| Automatic PWM-to-PFM Mode Switching | Maintains >85% efficiency down to 100 µA load by reducing switching frequency and quiescent current (33 µA) |
| Integrated Power-On Reset (nPOR) | Monitors both buck outputs simultaneously and asserts open-drain signal only when both are within ±6% of target - simplifies system reset logic |
| Low-Noise LDO Regulation | 80 µVrms output noise and 45 dB PSRR at 10 kHz - suitable for noise-sensitive analog or RF subsystems |
Applications
| FPGA Core & I/O Power | DSP/Processor Subsystem |
|---|---|
Use Scenario: Powering Xilinx Spartan or Intel Cyclone FPGA banks with separate core (1.2 V) and I/O (3.3 V) rails. IC Role / Device Role / Timing Role: LP3907QTLX-VXSS/NOPB acts as primary PMU - generating and sequencing all required voltages while enabling DVS during low-activity states. Use Value: Reduces BOM count by integrating two bucks and two LDOs; eliminates discrete POR circuitry via nPOR output. | Use Scenario: Supplying TI C6000 DSP with 1.4 V core, 3.3 V I/O, and 2.5 V analog subsystem. IC Role / Device Role / Timing Role: LP3907QTLX-VXSS/NOPB serves as centralized regulator with I²C-controlled startup order and voltage ramp rates. Use Value: Enables software-defined power states and runtime voltage adjustments - critical for adaptive processing workloads. |
| Portable Medical Electronics | Battery-Backed Industrial Sensors |
Use Scenario: Powering hearing aid SoCs with ultra-low quiescent current requirements and strict EMI limits. IC Role / Device Role / Timing Role: LP3907QTLX-VXSS/NOPB delivers clean, low-noise rails using PFM mode during standby and forced PWM during audio processing bursts. Use Value: Extends coin-cell battery life via 33 µA PFM quiescent current and 0.01 µA shutdown current. | Use Scenario: Maintaining sensor node operation during AC mains failure using backup Li-ion or supercapacitor. IC Role / Device Role / Timing Role: LP3907QTLX-VXSS/NOPB manages seamless switchover between primary and backup sources while regulating all rails. Use Value: Undervoltage lockout (2.7 V–2.9 V) prevents brownout operation; thermal shutdown protects against overtemperature during extended backup duty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023RSBR | Triple buck (2×1 A, 1×600 mA) + dual LDO (2×200 mA); no integrated nPOR; 2.7–5.5 V input | Lacks programmable power-on reset and DVS; lower LDO current limits reduce flexibility for high-I/O-count FPGAs | Select when needing third buck rail and lower cost, but accept reduced sequencing control and no nPOR integration |
| LP87332D0RGER | Dual buck (2×1.5 A) + dual LDO (2×300 mA); I²C + SPI; 2.5–5.5 V input; integrated watchdog | Higher buck current and dual-interface support; requires external POR circuit; larger 28-pin WQFN package | Choose for higher-current applications or when SPI interface and watchdog timer are required alongside I²C |
Compared with TPS65023RSBR and LP87332D0RGER, the LP3907QTLX-VXSS/NOPB uniquely combines nPOR integration, DVS capability, and compact 24-pin WQFN layout - making it optimal for space-constrained, I²C-managed FPGA and DSP platforms where precise sequencing and low-light-load efficiency are critical.
Availability
LP3907QTLX-VXSS/NOPB is available at Aetrix Electronics and suitable for FPGA power delivery, portable medical electronics, and battery-backed industrial sensors requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LP3907QTLX-VXSS/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies - with decades of expertise in high-reliability, thermally optimized PMUs for mission-critical systems.
The LP3907 product line was designed specifically for low-power, multi-rail applications in FPGAs, DSPs, and portable electronics - emphasizing programmability, thermal resilience, and integration density without sacrificing regulation accuracy or transient response.
FAQ
What is the input voltage range supported by the LP3907QTLX-VXSS/NOPB?
The LP3907QTLX-VXSS/NOPB supports an input voltage range of 2.8 V to 5.5 V, accommodating single-cell Li-ion batteries, USB power, or regulated DC supplies. This range ensures compatibility with common portable and embedded power sources while maintaining stable regulation across the full operating temperature range (−40°C to +125°C).
Does the LP3907QTLX-VXSS/NOPB include integrated power-on reset functionality?
Yes, the LP3907QTLX-VXSS/NOPB features an integrated open-drain nPOR output that monitors both Buck1 and Buck2 outputs. It asserts low when either output falls below 85% of its target or rises above 94%, with a default 50-ms delay - eliminating the need for external POR circuitry in most FPGA and DSP designs.
How does the LP3907QTLX-VXSS/NOPB manage efficiency at light loads?
The LP3907QTLX-VXSS/NOPB automatically transitions its buck converters from PWM to PFM mode under light loads, reducing switching frequency and quiescent current to 33 µA. This maintains >85% efficiency down to 100 µA output current - significantly extending battery life in standby or low-activity states.
Can the LP3907QTLX-VXSS/NOPB be used for dynamic voltage scaling (DVS)?
Yes, the LP3907QTLX-VXSS/NOPB supports real-time DVS via its 400-kHz I²C interface. Engineers can reprogram Buck1 and Buck2 output voltages on-the-fly to match processor workload demands - for example, lowering core voltage during idle periods to reduce dynamic power consumption.
What thermal performance metrics apply to the LP3907QTLX-VXSS/NOPB in its WQFN package?
The LP3907QTLX-VXSS/NOPB in the 24-pin WQFN (RTW) package has a junction-to-ambient thermal resistance (RθJA) of 32.7°C/W and junction-to-board resistance (RθJB) of 11.2°C/W. Its thermal shutdown activates at 160°C with 20°C hysteresis, and the exposed DAP pad must be soldered to PCB ground for optimal thermal performance.
LP3907QTLX-VXSS/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 25-WFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (2), Linear (LDO) (2)
- Number of Outputs:
- 4
- Frequency - Switching:
- 2.1MHz
- Voltage/Current - Output 1:
- 1.8V, 1A
- Voltage/Current - Output 2:
- 3.3V, 600mA
- Voltage/Current - Output 3:
- 2.8V, 300mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- Yes
- Voltage - Supply:
- 2.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 25-uSMD
LP3907QTLX-VXSS/NOPB FAQ
1.How can I place an order for LP3907QTLX-VXSS/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LP3907QTLX-VXSS/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LP3907QTLX-VXSS/NOPB reliable?
The price and inventory of LP3907QTLX-VXSS/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP3907QTLX-VXSS/NOPB is usually 5 days.
3.What payment methods are accepted for LP3907QTLX-VXSS/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP3907QTLX-VXSS/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP3907QTLX-VXSS/NOPB?
LP3907QTLX-VXSS/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP3907QTLX-VXSS/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LP3907QTLX-VXSS/NOPB?
For technical support, including LP3907QTLX-VXSS/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP3907QTLX-VXSS/NOPB requirements.
6.How does Aetrix verify that LP3907QTLX-VXSS/NOPB is sourced from the original manufacturer or authorized distributors?
All LP3907QTLX-VXSS/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LP3907QTLX-VXSS/NOPB meets industry standards.
7.What is the process for return or replacement of LP3907QTLX-VXSS/NOPB?
All LP3907QTLX-VXSS/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LP3907QTLX-VXSS/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LP3907QTLX-VXSS/NOPB part is unused and in its original packaging.
Return procedure for LP3907QTLX-VXSS/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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